Thread-holder.



No. ass-,723.

PATBNTED AUG. zo, A1907. P. R. KENT. THREAD HOLDER. APPLICATION ILED DBU- 16, 1906.

Wil'nyaoao FREDERICK R'. KENT, OE BALTIMORE, MARYLAND.

THRE AD-HOLDER.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed December 15,1906. Serial No. 347,983.

To all whom it may concern:

Be it known that l, FREDERICK R. KENT, a citizen of the United States, residing at Baltimore, in the State.

of Maryland, have invented certain new and useful lmprovements in Thread-Holders, of which the following is a specification.

My invention relates to a thread holder provided with means for locking it to its supporting post.

The object of my invention is to provide a thread holder with means for locking it to its support to prevent its unauthorized removal until all of the thread has been used and the locking means thereby released.

A further object is to provide the device with means whereby an authorized person may remove the thread holder in case it is necessary to do so before the thread has been used up,

These objects l accomplish by the construction shown in the accompanying drawings in which 2- Figure l is a section through a thread holder having the thread thereon and provided with one of my improved locking devices; Fig. 2 is a perspective of one of the locking devices; Fig. 3 is a perspective of a double thread-stand adapted for use with thread holders having my improved locking devices; Fig. 4 is a sectional view of a modification.

ln factories using large quantities of thread the same is furnished wound upon large tubes containing six thousand yards or upon spools containing as much as twelve thousand yards and it happens that employees carry off such thread to the loss of the employer and my construction seeks to prevent such unauthorized removal of the thread. To provide thereagainst, l form the locking device A which comprises an annulus a adapted to fit around the lower end of the thread holder B which in practice is a paper tube, and this annulus is formed with upwardly projecting spurs a which are forced upwardly between the outer face of the thread holder and the tightly wound mass of thread thereon. The annulus a is further formed with an inclined locking tongue a2 which projects upinto the interior of the thread holding tube. lt will be seen therefore, that while the locking device will be firmly held in place so long as the thread is unused it will be released from the holder when the thread has been used up. My invention therefore, comprises a locking 'device held in place by the thread or other material wound on a holder and released when the thread is unwound or used up. This device coperates with a spool stand C, which is of the usual construction except that its post c, or of,

is provided with a shoulder c2 or equivalent device with which or under which the spring tongue a2 will snap when the thread holder is pushed down on said post. The -left hand shoulder c2 is simply an enlargement cast on the post 'c but the right hand shoulder is formed of a wooden or breakable sleeve c3. Where there is no necessity or occasion to ever remove the thread from the post except as it is used bythe machine in sewing the left hand form of shoulder c2 will be employed but where the thread has to be removed for any purpose other than in sewing the right hand form of shoulder c3 will be employed. By inserting a chisel in the upper end of the thread holder the wooden or breakable shoulder may be severed or broken and so the thread may be removed, These wooden or breakable shoulders may be forced down on the post c very tightly so that they will withstand any effort to pull them off with the thread holders.

The locking device may be applied with slight change to other forms of thread holders such as spools, cones and the like as well as to the form shown in the drawing and may be employed for locking tubes on which material other than thread is wound.

The post c/ shown in the drawing is tapered and iiuted to receive ordinary spools instead of tubes and the wooden sleeve c3 renders such post capable of receiving tubular paper thread holders. To adapt the post cf therefore, to spools having my improved locking device it will only be necessary to iile or form a notch c4 to constitute a shoulder for the locking tongue.

The locking device could be applied to a spool E as shown in Fig. 4 where the locking tongue a2 has an attaching shank or prong a5 extending across the end of the spool and up under the thread so as to be released when the thread is exhausted from the spool. But other ways may be provided for applying the locking device to spools tubes etc., without departing from the spirit of my invention.

What I claim is 1. A holder for wound material having` a locking device projecting into its bore retaining means for the locking device held in place by the material and released when the material is unwound.

2. A holder for wound material having a locking tongue projecting into its bore and provided with retaining means lying between the outer side of the holder and the wound material.

3. A holder for wound material having a locking device comprising' an annulus havin" spurs lying between the outer side of the holder and the wound material and a tongue projecting into the bore of the holder.

4. A paper tube having a thread wound thereon provided with a locking device having spurs forced between the thread and tube and a locking tongue projecting into thc end of the tube.

A locking device for holders of wound material com prisingan annulus having spurs to lie between the materia] and holder and a locking tongue to enter the bore of the holder.

G. The combination with a post having a shoulder', of a holder for wound material adapted to fit over said post and provided with a locking device adapted to snap into engagement with said shoulder and held in place b v the wound material.

T. The combination with a post having a shoulder, of

a tubular holder for wound material adapted to fit over D. A thread stand having a post provided with a said post and provided with a locking device comprising shouldered breakable sleeve adapted for engagement by an annulus having attaching prongs held between the a locking device on a spool or holder.

outer side of the holder and the wound material and a In testimony whereof I aflix my signature, in presence 5 locking tongue entering the end of the holder to snap of two witnesses.

into engagement with said shoulder.

8. The combination with a post having a breakable shoulder', in combination with a holder for wound ma- 'itnesses:

terial provided with a locking device adapted to engage E. H. PAnKINs, l0 said shoulder. A. M. PARKINS.

FREDERICK R. KENT. 

